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Alternative Brake Drums?
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Primer31
Posted 2022-03-27 11:01 AM (#620507)
Subject: Alternative Brake Drums?


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Posts: 3

I have a 62 300 (I know not a forward look), and my brake drums cannot be machined. the price for new ones, $110 ea, seems pretty high. Does anyone know of some later or earlier ones that would be more cost effective? I have replaced everything else so I don't want to do a disc brake conversion. Thanks for any help.
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56D500boy
Posted 2022-03-27 6:56 PM (#620513 - in reply to #620507)
Subject: RE: Alternative Brake Drums?



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It would help us help you if you told us how big the drum is, e.g. 11" inside diameter x 2.5" (or 3"?) deep (shoe width).

Armed with that knowledge, it might be possible to find drum either new old stock or used.

Don Petty in Arizona, Big M in California, French Lake Auto Parts in Minnesota and Wildcat Auto in Oregon are possibilities.

Or maybe like this from Mopar Mall in California:

11"x 2 1/2" Front Brake Drum/Hub for 1959-1961 Dodge - DeSoto - Chrysler:

https://www.moparmall.com/MoPar-1948112-1948113-Front-Brake-Drum-Hub...





Edited by 56D500boy 2022-03-27 6:57 PM
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Primer31
Posted 2022-03-27 8:29 PM (#620520 - in reply to #620507)
Subject: Re: Alternative Brake Drums?


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Thanks for the response! The diameter is 12" and the shoe width is 2.5" . Mopar mall, from what I saw was pretty expensive and they wanted to sell the drum and hub as 1 unit. I'll check the other places.



Edited by Primer31 2022-03-27 8:40 PM
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56D500boy
Posted 2022-03-27 8:56 PM (#620521 - in reply to #620520)
Subject: Re: Alternative Brake Drums?



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Not sure what your expectations are but even in 1962 the front brake drum was integral with the hub.

As far as I can tell the PN for the 12 x 2.5" front brake drum and hub for a SC2 (=300) was P 2275434 and 435 and it looks like it was also used on other Chryslers and probably the big Dodge 880 (which was Chrysler-based)

Probably like this one:

https://www.moparmall.com/1960-61-Chrysler-12-x-2-5-Front-Brake-Drum...







Edited by 56D500boy 2022-03-27 9:04 PM




(1962Chrysler12x2point5FrontBrakeDrumAndHubPN2275434and435.jpg)



Attachments
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Attachments 1962Chrysler12x2point5FrontBrakeDrumAndHubPN2275434and435.jpg (135KB - 140 downloads)
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Ev's62Chrysler
Posted 2022-03-28 12:45 PM (#620533 - in reply to #620507)
Subject: Re: Alternative Brake Drums?



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I was just quoted $229 each for used fronts and $495 each for NOS rears for my 62 (12" x 2.5"). Where did you find new ones for $110?
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ronbo97
Posted 2022-03-28 3:25 PM (#620538 - in reply to #620533)
Subject: Re: Alternative Brake Drums?


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Yes, you need the integrated drum/hub. That's the way it came from the factory. Mopar Mall is stupidly overpriced. No need to buy from them.

I believe that late 59 thru 62 will work, but I don't have my parts books in front of me right now. Speak to Big M (John Fowlie) or look for people parting out senior model Mopars from those years. Many folks are doing disc brake conversions. So they will likely have fronts that they no longer need.

Ron

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mikes2nd
Posted 2022-03-28 4:25 PM (#620544 - in reply to #620507)
Subject: Re: Alternative Brake Drums?


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yeah most of us cant give away good drums... dont get ripped off
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Primer31
Posted 2022-03-28 10:27 PM (#620557 - in reply to #620507)
Subject: Re: Alternative Brake Drums?


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Posts: 3

Kanter had them for $110. I also saw a guy on eBay had some for $99. I pressed mine off. I don't understand why you'd need the hub as well. That's why I was asking if anyone knew of a different year or make (ie Ford) that was the same size.
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ronbo97
Posted 2022-03-28 10:40 PM (#620558 - in reply to #620557)
Subject: Re: Alternative Brake Drums?


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Primer31 - 2022-03-28 10:27 PM I pressed mine off. 

They are designed to work as a one piece unit. You risk brake chatter, improper centering, pulling to one side and other problems. I SMH when people think they know better than the Chrysler engineers that designed these brakes a certain way.

Ron

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Richbo
Posted 2022-04-17 10:56 AM (#620928 - in reply to #620557)
Subject: Re: Alternative Brake Drums?


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Many millions of cars use separate hubs / drums. You just need to use the correct lug stud .
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JBLKEN
Posted 2022-06-14 5:51 AM (#622125 - in reply to #620507)
Subject: RE: Alternative Brake Drums?


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As for 62 Chrysler drums (and most likely earlier years) The brake drums can be turned out to a max of .090. Do not let a parts store clerk (or unknowing brake shop) tell you that .060 is max, Unlike other car makes the Chrysler drums were capable of the .090. I learned this from an old auto engine and brake shop owner (think now long deceased- and I'm at that late age of 85) He was well known, in Silicone Valley, for his work on older engines/brakes) who did my 62-300 brake drums (after some young counter kid refused to turn by drums over .060). I questioned the old guy about the .090 and he indincated that only (certain early years) Chrysler products were capable of this.
So if your drums are at .060 your good for another .030 of drum machining!
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jboymechanic
Posted 2022-06-14 10:12 AM (#622129 - in reply to #622125)
Subject: RE: Alternative Brake Drums?



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I suggest you separate your drums and hubs and use "floating" drums like the more modern cars. Then you can use a much more affordable drum from the 1960s/1970s. The drum will still center on the hub so you don't have to worry about vibration.
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ronbo97
Posted 2022-06-14 11:31 PM (#622149 - in reply to #622129)
Subject: RE: Alternative Brake Drums?


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jboymechanic - 2022-06-14 10:12 AM I suggest you separate your drums and hubs and use "floating" drums like the more modern cars. Then you can use a much more affordable drum from the 1960s/1970s. The drum will still center on the hub so you don't have to worry about vibration.

Nope. Find used hub/drum assemblies. Big M automotive will likely be able to help you out.  Late-59 thru 62 are the same. Do not separate or you will regret it.

Ron

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jboymechanic
Posted 2022-06-16 1:24 PM (#622168 - in reply to #620507)
Subject: Re: Alternative Brake Drums?



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Sorry, but I disagree. If you buy a floating drum that is piloted by the hub and then you tighten down your wheel on top of it how is the drum any less centered or constrained that one that is uses lug studs to swedge the drum to the hub? As Richbo pointed out, this is how millions of cars were produced for decades.
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ronbo97
Posted 2022-06-16 3:45 PM (#622175 - in reply to #622168)
Subject: Re: Alternative Brake Drums?


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jboymechanic - 2022-06-16 1:24 PM Sorry, but I disagree. If you buy a floating drum that is piloted by the hub and then you tighten down your wheel on top of it how is the drum any less centered or constrained that one that is uses lug studs to swedge the drum to the hub? As Richbo pointed out, this is how millions of cars were produced for decades.

If you separate drum and hub, the aftermarket drum will not sit perfectly centered on the hub. Then you will have to live with vibration, as well as one shoe touching the drum surface before the other one does. Why do you think Chrysler Corp went through the extra expense of creating these drum/hub assemblies as one piece units ? Also the aftermarket drums available today are made overseas, likely not to the same tolerances/quality that the OEM products were.

Whether other auto manufacturers used separate drums and hubs is not relevant. They were of a different design.

Ron

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wizard
Posted 2022-06-17 2:57 AM (#622183 - in reply to #620507)
Subject: Re: Alternative Brake Drums?



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As for aftermarket drums, I don't know if they have a perfect fit and will center good. As for separating original drums from the hubs, I know that it's totally sure that it will work. I have been driving with all drums separated from the hubs for years without any problems.

Gives great access for road side service.
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22mafeja
Posted 2022-06-17 3:41 AM (#622184 - in reply to #622183)
Subject: Re: Alternative Brake Drums?


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Yep ,I agree with Sven. I am going to make my left side front drum like this since a former idiot has broken two bolts having not known
what the L on the bolts means.
I am going to make a centering step on the hub for the center hole just to be sure. In a turning machine of course.
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dels56
Posted 2022-06-19 8:00 PM (#622247 - in reply to #620507)
Subject: Re: Alternative Brake Drums?


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I am in the process of changing Left Hand thread Studs on my rear wheel to Right Hand. It has proven to pretty easy to do. Take a look at my thread "Wheel Studs"
Now if there are alternative drums out there someplace????

Del S
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dels56
Posted 2022-06-26 8:09 PM (#622408 - in reply to #620507)
Subject: Re: Alternative Brake Drums?


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Take a look at www.moparpro.com. They show a number of different drums. All the photos show threaded holes for a bolt but then they have Studs also listed.

Del
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